![]() Launching Windows Device Manager and Disabling and thenĮnabling the relevant COM Port.After this action, the application manages to reconnect to the COM port. Launching the Windows Device Manager and performing a refresh on the relevant COM port.However, it is not an option for us to run our application with Administrative privileges. With Admin privileges this issue was not Terminating the application and re-launching with Administrative privileges.None of these are practical in our scenario, since this is an unattended, consumer facing product / application. When the above error occurs, the following are some scenarios which enables the application to open the COM port again. System.IO.() īut the serial COM port is visible to the following Devcon command. ![]() We have observed that the COM port is not visible to the application when attempting to obtain the serial port via the following call. ![]() ![]() WriteTimeout, Handshake handshake, Boolean dtrEnable, Boolean rtsEnable, Boolean discardNull, Byte parityReplace) System.IO.IOException: The port 'COM15' does not exist.Īt System.IO.(Int32 errorCode, String str)Īt System.IO.(String portName, Int32 baudRate, Parity parity, Int32 dataBits, StopBits stopBits, Int32 readTimeout, Int32 ![]()
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